// Metgine/Core/Intersection.h
//
// Copyright 2011 Phillip Stephens
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
//
// Linking this library statically or dynamically with other modules is
// making a combined work based on this library.  Thus, the terms and
// conditions of the GNU General Public License cover the whole
// combination.

#ifndef __INTERSECTION_H__
#define __INTERSECTION_H__

#include <Metgine/Core/Math.h>
#include <Metgine/Core/Vector2.h>
#include <Metgine/Core/BoundingBox.h>

namespace Metgine
{

namespace Core
{

class Object;


namespace IntersectionType
{
enum IntersectionType
{

    None,                // No intersection occurred
    Object,            // An intersection with an object

};

};

// TODO: Make this useful

struct Intersection
{

    Object*                              object;          // Object hit, or NULL if no collision with an object
    Vector2f                             position;        // Location of the intersection
    float                                distance;        // Distance to the intersection
    IntersectionType::IntersectionType   type;            // Type of the intersection

    Intersection();
};


bool METGINE_API RayCircleIntersection(const Vector2f& rayStart, const Vector2f& rayDirection, const Vector2f& circleCenter, float circleRadius, float maxRange, Vector2f& intersection);
bool METGINE_API BoxBoxIntersection(const BoundingBoxf& a, const BoundingBoxf& b);

}; // Core
}; // Metgine

#endif // INTERSECTION_H
